Dump door for railway cars



A. S.. BARROWS DUMP Doon FOR RAILWAY ARs Filed Aug. '7, 1925 oct. 1 3, 1931.

llan ASBL-arrows.

Patented ct. i 13, 1.931

l UNITED STATES PATENroFFIcE.

yALLAN s. :BARRoWs or Los ANGELES,y CALIFORNIA, AssIGNoE r"ro TIIE YOUNGSTOWN y STEEL noon COMPANY, or CLEVELAND, oIIIo,fA coItroEA'rIoNoE oHIo f Jamin| Doon ron. RAILWAY cAns j Application led iilugust 7,` -1925. Serial No. 48,816.

rl"his invention relates to dum doors for P railway cars. 4'

An object ofthe invention isto provide an improved form of door forhopper, dump,

\ and general service cars which will be strong and economical ofmanufacture, and which includes a. plurality of metallic sheets, rigidly fastened together,.the upper sheet, or the sheet upon which the materiallis adapted to rest, preferably .carbon steel alloy so as to .resist abrasion,- and Ythe otherof said sheets being of thinner gage and secured to the main door sheet, the second ysheet being of lower grade material and provided with certainintegral reinforcing means arranged so as to brace the -door in a simple and eective'inanner.k 1

Other and further objects of the'v invention vwill more fully and clearly appear from the description and claims hereinafter following. .ln the drawings Figure 1 is a bottom plan view of a door constructed in accordance with my invention, and adapted to be used with va .hopper construction; Figure 2 is a transverse sectional view of the invention on the line 2--2 of Figure 1; Figure 8 is a vertical longitudinal sectional view through the hopper portion of a car of the ordinary hopper type, showing a door constructed in accordance with the principles of the present invention applied thereto; Figure'll isgran` enlarged fragmentary vertical sectional view of the invention similar to Figure 2, showing a slightly different embodiment of the-invention; and Figure 5 is a fragmentary vertical sectional view of the invention arranged for use in connection with a dump, or general servicecar. Y

Referring first to Figure 3 of the drawings, the hopper side of the caiis indicatedat 5, and 6 designates the corresponding hopper floor plate. A transverse connecting plate is indicated at 7 and pivotally secured to such plate by hinge brackets indicated at 8,-are hinge straps shown at 9, adapted to be fas# being of .smooth high gradev tened tothe car door, this construction being .of a well known type. 'f I `The door 10 is adapted yto close the opening of the hopper defined by the various component parts of the hopperlsection. Said door ,comprises a main door sheet 11, which Vis preferably in the'form of a comparatively thin plate of high carbonsteel alloy, .which has .properties of successfully resisting abrasion, occurring in' actual practice, due to theslidingyoffthe*material on the door plate when kthe door is opened. The side and -forward margins ofthe main sheet 11 are provided with upturned flanges 12 and 13, the

fllanges'being integrallyy formed with the door sheet and with each other, and a rear flange 13a is provided which is turned in the opposite direction,` having cut out portionslt which are provided to permit extension of4 the hinge straps 9 therethrough in order to fasten thesame to the door, said flanges serv- -ingto brace the main'door sheet. Y

Secured` to the undersurface ofthe door sheet 11 is a reinforcing door sheet 15, preferably of thinner gage than the door sheet 11, and of" a cheaper grade of material the sheet 15 being slightly smaller in final orm than the main door sheet 11, and the body portions of the two sheets are rigidly secured together by suitable'means such as rivets 20, which .are counter-sunk in the main sheet 11, to preserve the smooth unobstructed top sur.- face thereof'. The two sheets 11 and 15 may vbe secured-together by spot'welding if desired, instead of utilizing rivets for this purose.v y y The sheet 15is provided with Van arrangement ofcorrugations which are for the pur- *pose of lending strength to the-reinforcing sheet 15,- which in l.turn braces the main door sheetfll. rSaid corrugations. preferably in- Vcludeone of rectangular formation, the side portions 21 and'22 of which extendinsub- -stantial parallelism with the longitudinally extending margins of the door sheets, and

transverse portions 23 which connect the longitudinal portions 21 and 22 at their ends, the portion 22 of the corrugat-ion preferably being disposed a greater distance from the front edge of the door sheet, than the portion 21 of the corrugation is spaced from the rear longitudinal edge of the door sheet, for the purpose of providing a fiat section 25 free of corrugations, to which may be attached suitable securing brackets (not shown), of various ordinary and usual con-A struction. Formed in the sheet 15 so as to merge with the portions 21 and 22 of the rec-- tangular corrugation, is a plurality of spaced transversely extending corrugati'ons 26, said corrugations being arranged'so as to merge with the portions 21 and 22 so as to provide an arrangement of connected corrugations, which may be formed at one time and which brace the door in all directions.

The connecting end `corrugations 23 are each spaced asuitable distance from the transverse edge ofthe door sheet 15, and between the edges of the door 15, and the end corrugations at each side of the door member is formed a transversely extending corrugatio-n 27, which braces the transverse edge of the door, and due to the spacing thereof allows room for the projection of the hinge straps 9 an appreciable distance inwardly of the edge of the door, said hinge straps extending along the door sheet 15, between said corrugations, and being fastened in position by suitable rivets 28.

By this arrangement the Amain door sheet 11 may be made up of a relatively thin sheet of high carbon steel alloy so as to :resist abrasion and present a smooth unobstructed surface to the flow of the material when the same is dumped from the car, andy this comparatively thin sheet of material maybe adequately braced by an auxiliary sheet of relatively low grade material, the reinforcing sheet being braced by the corrugations to compensate for stresses tending to distort the door in a longitudinal direction, and against distortion transversely, the corrugations being arranged in a novel manner so as to merge, permitting the corrugations to be formed at one operation, and providingan arrangement of exceptional strength. lt will be appreciated that the flanges 12 and 13, of the main sheet may be formed to extend in a direction opposite to that shown as indicated in Figure 5, if it is desired to use this type of door in a hopper arrangement.

A slightly different embodiment of the invention is illustrated in Figure 4 ofthe drawing, this construction including a main sheet 30, and an auxilliary sheet 31, rigidly connected together by suitable rivets or spot welding, the sheet 31 being provided with corrugations which serve to brace the door struct-ure, such door structure being identically similar to that hereinbefore described except for the fact that the flanges 12 and 13 upon the sheet 11, are omitted therefrom, and a somewhat different means associated with the door structure for bracing the side edges thereof. Said means include an angle member 3a extending along each transverse edge of the door member, the flange 35 of such bar being disposed. iiatufise upon the undersurface of the sheet 31, and the of such bar being disposed at right angles thereto, and extending along the edges of both door sheets 30 and 31, and projecting beyond the upper surface of the sheet 30, the rivets 37 for securing the flange 35 to the door structure preferably extending through door sheets 30 and 31 as shown, the rivet heads on the upper side of the sheet 30 being countersunk to preserve' the smooth unobstructed surface of the doorstructliire. Although only one side edge of the door structure is illustrated in the drawing, it of course will be understood that the opposite side edge of the door structure and the forward edge of the same is provided with a similar angle bar in the same manner as above descrioed with reference to the angle bar 34.

vWhen the door is intended to be used as a side or floor door in dump or general service cars, the construction may be slightly varied in the manner illustrated in Figure 5. lleferring to said ligure, the two sheets and '51 are formedand secured together in the same manner herein-.before referred to, the main sheet 50 being provided with an integral liange 52 turned in the direction of the sheet 51., only one side edge of the door being shown in Figure 5, but it will be understood that 'the other side edge, as well as the front and rear edges are provided with similar fianges. Each of the edges of the door may be reinforced by an angle member 53, one flange of which is secured to the undersurface of the rsheet 51, and the other flange of which is secured to the flange 52 of the sheet 50. 'When the construction is used as a floor or side door, it will present the smooth surface toward the material in the car, the reinforcing edge members projecting outwardly therefrom.

lhile I have herein shown and described what I now consider the preferred manner of carrying` out my invention, the same is merely illustrative and l contemplate all changes `and modifications that come within the scope of the claims appended hereto.

I claim:

1:. As an article of manufacture, a dump door comprising a plurality of sheets rigidly secured together, one of said sheets being of hardened wear resisting steel and the other of said sheets being yof lower grade material and including integral reinforcing means for strengthening said first sheet.

2. As an article of manufacture, a dump door including a plurality of door sheets riging provided with a smooth unobstructed surface adapted to be disposed in contact with the material associated therewith and l ysecond sheet having `angular yflange portions the other of vsaid sheets being substantially co-extensive with said first sheet and pro-v vided with a plurality of integral corrugay tions for bracing the door sheets, said corrugaticns including a plurality of portions eX- tending at an angle to each other and merging to provide a continuous corrugation'.

3. As an article of manufacture, a car door including a plurality. of door .sheets rigidly secured together, one of said sheets being provided with alsinooth unobstructed surface adapted to be disposed in Contact with the material associated therewith, and the other of said sheets being provided with a plurality of corrugations for bracing the door sheets, certain of said coriugations extending adjacent the longitudinal edges of the door sheet, and other of said corrugations extending transversely of said door sheet,

4:. As an article of manufacture, a dump door including a plurality ofdoor sheets rigidly secured together, one of said sheets being provided with a smooth unobstructedy surface adapted to be disposed incontact with the material associated therewith, and the other of said sheetsbeing provided with a plurality of corrugations for bracing the door sheets, certain of said corrugations extending adjacent the longitudinal edges ofthe door sheet, and other of said corrugations extending transversely of said door sheet, and merging with said longitudinally extending corrugations to provide a' continuous ar'` rangement.

5. In a door of the character described, the combination with a door sheet having a smooth unobstructed surface adapted to be.

disposed in Contact with the material carried thereby; and a reinforcing door sheet rigidly secured to said rst sheet and having formed therein reinforcing corrugations, a plurality of which extend transversely of said door sheet, and others of which extend longitudinally of said door sheet, certain of said transverse corrugations merging with saidy longitudinal corrugations, and others being spaced therefrom; and hinge straps fastened tothe door sheets and extending within the spaces between certain of said transversely disposed corrugations.

6. As an article of manufacture, al main dump door comprising a metallic sheet formed of wear resisting material, and being provided with flanges along its edges extending at an angle to the main body of the sheet, and a sheet of material substantially coextensive with said main door rsheet integrally reinforced and rigidly secured to said main door sheet.

7. As an article of manufacture, a main door sheet formed of wear resisting material,

rial rigidly vsecured to saidvinain sheet, said associated therewith and rigidly secured to the flanges yof said first sheet.

door sheet formed of wear yresisting material, anda sheet of material substantially co-extensive' with said main door sheet and integrally reinforced' and rigidly securedl to said main sheet; and means on said'door for f reinforcing the'edges of said door, said means being in the form of angular members rigidly secured to the door edges.

9. A dump door for the discharge opening of a railway car, the same beingformed of a sheet of metal conforming' in genera-l shape to the outline of the discharge opening, said sheet having a smooth unobstructed upper surface; of a second sheet rigidly secured to the -undersurface of said first sheet, said second sheet being provided with a plurality of corrugations extending at an angle to eachl other to brace said door sheets.

10. In a device of the ycharacter described, the combination with a hopper section delining a hopper opening; of a pivoted door for closing said opening, said door comprising an upper door sheet of hardened wear resisting-material; a second sheet rigidly connected to Asaid first sheet and provided ywith a plural- .ity of integral reinforcing elementsand ar-V ranged to brace the door sheets; vand angularly disposed reinforcing elements associated with the edges of said door.

11.v A dump door comprising a main door sheet formed of metallic wear resisting material, and an integral reinforced metallic sheet substantially ofthe same size as said main sheet and rigidly secured to said main sheet, and adapted to brace the saine; and

means on said door for reinforcing the side edges thereof.

12. As anrarticle of manufacture, a ydoor including: two metallic sheets, one having integrally formed strengthening indentations incorporated therein, said two sheets,y

being rigidly secured together in face-to-face relation, whereby one she-etr is reinforced per se and the two sheets mutually co-'act to reinforce and brace each other against deformation, said door having flanges along some of the edges thereof.

13. As an article of manufacture, a pivoted dump door for cars, said door including: a flat metallic sheet and a second metalli-c sheet having integrally formed strengthening in dentations incorporated therein, said two sheets being rigidly secured together and in surface-to-surface contact throughout the area of said indented sheet, except where the latter is indented, whereby the indented sheet is integrally reinforced and the two sheets mutually coact to reinforce and brace each other againstJ bending7 said *door having a flanged formation lalong seine of the edges thereof.

14. In combination With the other elements of a railway clump car7 a plate inetal door having an embossed panel pressed from the plane of the plate With flat margins surrounding said panel and a metallic sheet secured to said plate.

In Witness that l claiin the foregoing I have hereunto subscribed my naine this 28th clay of July, 1925.

ALLAN S. BARROWS.

iazoea 

